1
Find the lowest common denominator
1/2 & 1/8
8
What number is the numerator?
3/6
3
Subtract these fractions
5/9 - 3/9
2/9
Add these fractions
1/3 + 3/9
6/9 or 18/27
What number is the denominator
12/24
24
Subtract these fractions
6/9 - 3/9
3/9
Add these fractions
5/10 + 4/10
9/10
Add these fractions
2/4 + 2/8
6/8, 12/16, 24/32
Add these fractions
1/3 + 2/9
5/9 or 15/27
Add these fractions
2/4 + 1/4
3/4
Subtract these fractions
9/12 - 6/12
3/12
Find the lowest common denominator
2/3 & 8/33
33
4/6 - 2/6
2/6
Who is the best teacher?
Mrs. Monk
Find the lowest common denominator
3/8 & 2/6
24
Find the lowest common denominator
3/7 & 6/21
21
Add these fractions
3/8 + 4/12
17/24
How do we find the least common denominator?
By skip counting until you get to the first number that both numbers have in common
Add these fractions
16/32 + 2/32
18/32
Subtract these fractions
4/9 - 1/3
1/9
Add these fractions
3/9 + 2/18
8/18
Subtract these fractions
2/3 - 5/12
3/12
Add these fractions
1/4 + 1/3 + 3/12
10/12
Add these fractions
4/14 + 1/7
6/14
Subtract these fractions
3/4 - 1/8
5/8